diff options
Diffstat (limited to 'packages/linux/linux-openmoko')
| -rw-r--r-- | packages/linux/linux-openmoko/fix-gta01-flowcontrol2-2.6.22.5.patch | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/packages/linux/linux-openmoko/fix-gta01-flowcontrol2-2.6.22.5.patch b/packages/linux/linux-openmoko/fix-gta01-flowcontrol2-2.6.22.5.patch new file mode 100644 index 0000000000..ddb58f0cdb --- /dev/null +++ b/packages/linux/linux-openmoko/fix-gta01-flowcontrol2-2.6.22.5.patch @@ -0,0 +1,193 @@ +--- linux-2.6.22.5/arch/arm/common/gta01_pm_gsm.c.orig 2007-09-27 11:23:20.000000000 -0500 ++++ linux-2.6.22.5/arch/arm/common/gta01_pm_gsm.c 2007-09-27 21:09:00.000000000 -0500 +@@ -23,6 +23,9 @@ + #include <asm/arch/gta01.h> + #include <asm/arch/gta02.h> + ++#include <linux/serial_core.h> ++void s3c24xx_set_flow_control(struct uart_port *port, int fc_on); ++ + struct gta01pm_priv { + int gpio_ngsm_en; + struct console *con; +@@ -49,6 +52,23 @@ + static ssize_t gsm_read(struct device *dev, struct device_attribute *attr, + char *buf) + { ++ struct uart_driver *udrive = NULL; ++ struct uart_state *ustate = NULL; ++ struct uart_port *uport = NULL; ++ ++ if (gta01_gsm.con) { ++ udrive = gta01_gsm.con->data; ++ if (udrive) { ++ ustate = udrive->state; ++ if (ustate) { ++ uport = ustate->port; ++ } ++ } ++ } ++ printk("gsm: gsm_read of \"%s\"\n", attr->attr.name); ++ printk("gsm: con=%p udrive=%p ustate=%p uport=%p\n", ++ gta01_gsm.con, udrive, ustate, uport); ++ + if (!strcmp(attr->attr.name, "power_on")) { + if (s3c2410_gpio_getpin(GTA01_GPIO_MODEM_ON)) + goto out_1; +@@ -58,6 +78,24 @@ + } else if (!strcmp(attr->attr.name, "download")) { + if (s3c2410_gpio_getpin(GTA01_GPIO_MODEM_DNLOAD)) + goto out_1; ++ } else if (!strcmp(attr->attr.name, "flowcontrol")) { ++ if (uport) { ++ if (uport->unused[2] & 0x2) { ++ if (uport->unused[2] & 0x1) { ++ printk("gsm: flow control allowed and on\n"); ++ goto out_1; ++ } else { ++ printk("gsm: flow control allowed and not on\n"); ++ } ++ } else { ++ if (uport->unused[2] & 0x1) ++ printk("gsm: flow control not allowed, " ++ "but is pending\n"); ++ else ++ printk("gsm: flow control not allowed, " ++ "not pending\n"); ++ } ++ } + } + + return strlcpy(buf, "0\n", 3); +@@ -68,10 +106,26 @@ + static ssize_t gsm_write(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) + { ++ struct uart_driver *udrive = NULL; ++ struct uart_state *ustate = NULL; ++ struct uart_port *uport = NULL; ++ static int was_on = 0; + unsigned long on = simple_strtoul(buf, NULL, 10); + ++ if (gta01_gsm.con) { ++ udrive = gta01_gsm.con->data; ++ if (udrive) { ++ ustate = udrive->state; ++ if (ustate) { ++ uport = ustate->port; ++ } ++ } ++ } ++ printk("gsm: con=%p udrive=%p ustate=%p uport=%p\n", ++ gta01_gsm.con, udrive, ustate, uport); ++ + if (!strcmp(attr->attr.name, "power_on")) { +- if (on) { ++ if (on && !was_on) { + if (gta01_gsm.con) { + dev_info(dev, "powering up GSM, thus " + "disconnecting serial console\n"); +@@ -83,7 +137,24 @@ + s3c2410_gpio_setpin(gta01_gsm.gpio_ngsm_en, 0); + + s3c2410_gpio_setpin(GTA01_GPIO_MODEM_ON, 1); +- } else { ++ ++ if (uport) { ++ /* set any pending flow-control mode */ ++ uport->unused[2] |= 0x2; ++ s3c24xx_set_flow_control(uport, ++ (uport->unused[2] & 0x1)); ++ dev_info(dev, "flow control allowed\n"); ++ } ++ ++ was_on = 1; ++ ++ } else if (!on && was_on) { ++ if (uport) { ++ uport->unused[2] &= ~0x2; ++ s3c24xx_set_flow_control(uport, 0); ++ dev_info(dev, "flow control not allowed\n"); ++ } ++ + s3c2410_gpio_setpin(GTA01_GPIO_MODEM_ON, 0); + + if (gta01_gsm.gpio_ngsm_en) +@@ -95,6 +166,8 @@ + dev_info(dev, "powered down GSM, thus enabling " + "serial console\n"); + } ++ ++ was_on = 0; + } + } else if (!strcmp(attr->attr.name, "reset")) { + s3c2410_gpio_setpin(GTA01_GPIO_MODEM_RST, on); +@@ -105,6 +178,7 @@ + return count; + } + ++static DEVICE_ATTR(flowcontrol, 0644, gsm_read, gsm_write); + static DEVICE_ATTR(power_on, 0644, gsm_read, gsm_write); + static DEVICE_ATTR(reset, 0644, gsm_read, gsm_write); + static DEVICE_ATTR(download, 0644, gsm_read, gsm_write); +@@ -136,6 +210,7 @@ + #endif + + static struct attribute *gta01_gsm_sysfs_entries[] = { ++ &dev_attr_flowcontrol.attr, + &dev_attr_power_on.attr, + &dev_attr_reset.attr, + NULL, +--- linux-2.6.22.5/drivers/serial/s3c2410.c.orig 2007-09-27 11:23:27.000000000 -0500 ++++ linux-2.6.22.5/drivers/serial/s3c2410.c 2007-09-27 21:07:21.000000000 -0500 +@@ -80,6 +80,8 @@ + + #include <asm/arch/regs-serial.h> + #include <asm/arch/regs-gpio.h> ++#include <asm/mach-types.h> ++#include <asm/arch/gta01.h> + + /* structures */ + +@@ -729,6 +731,17 @@ + return best->quot; + } + ++/* This routine is called whenever the gta01 modem/console switches */ ++void s3c24xx_set_flow_control(struct uart_port *port, int fc_on) ++{ ++ unsigned int umcon; ++ if (machine_is_neo1973_gta01() && port) { ++ umcon = (fc_on) ? S3C2410_UMCOM_AFC : 0; ++ wr_regl(port, S3C2410_UMCON, umcon); ++ } ++} ++EXPORT_SYMBOL(s3c24xx_set_flow_control); ++ + static void s3c24xx_serial_set_termios(struct uart_port *port, + struct ktermios *termios, + struct ktermios *old) +@@ -803,6 +816,23 @@ + + umcon = (termios->c_cflag & CRTSCTS) ? S3C2410_UMCOM_AFC : 0; + ++ /* ++ * Custom handling of flow control on hwport 0 for the GTA01: ++ * Save the desired state for flow control, but if the port ++ * is being used as a console, then do not actually enable ++ * flow control unless the flag permiting us to do so is set. ++ */ ++ if (machine_is_neo1973_gta01() && (cfg->hwport == 0)) { ++ if (umcon) ++ port->unused[2] |= 0x1; ++ else ++ port->unused[2] &= ~0x1; ++ if (port->cons && (port->cons->index >= 0)) { ++ if (!(port->unused[2] & 0x2)) ++ umcon = 0; ++ } ++ } ++ + if (termios->c_cflag & PARENB) { + if (termios->c_cflag & PARODD) + ulcon |= S3C2410_LCON_PODD; |